[QGIS-Developer] Build fails on Ubuntu 18.04

[Sebastiaan Couwenberg]

On 4/3/20 10:07 AM, Clemens Raffler wrote:
> I am currently working on some processing algorithms and wanted to
> rebase my branch on master. But since yesterdays pull of the latest
> commits (some also concerning a fix of the windows build), cmake
> complains that 'Protobuf library's 'protoc' tool was not found!'. Does
> anyone know the cause for this problem or how to fix it? I am working on
> Ubuntu 18.04.4.

Cause seems to be this commit:

 https://github.com/qgis/QGIS/commit/2cfd69929539cb8642446e187d735ff833fface7

The fix is to install the protobuf-compiler package which provides the
protoc executable.

Kind Regards,

Bas

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